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Finding the Fourth Proportional to 13,671.02, 18,867.35 and 8,005.42

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Solution

The fourth proportional to 13,671.02, 18,867.35 and 8,005.42 is: 11,048.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.02 : 18,867.35 = 8,005.42 : x
  2. Step 2: Convert to fraction form
    13,671.02/18,867.35 = 8,005.42/x
  3. Step 3: Cross multiply
    13,671.02x = 18,867.35 × 8,005.42
  4. Step 4: Simplify right side
    13,671.02x = 151,041,061.04
  5. Step 5: Solve for x
    x = 151,041,061.04/13,671.02
  6. Step 6: Final answer
    x = 11,048.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.